The xterm program is the standard terminal emulator for the X Window System. It provides DEC VT102/VT220 and Tektronix 4014 compatible terminals for programs that can't use the window system directly. If the underlying operating system supports terminal resizing capabilities (for example, the SIGWINCH signal in systems derived from 4.3bsd), xterm will use the facilities to notify programs running in the window whenever it is resized.

SQS is a project assigned to remote management of
computer systems. It provides a means by which a
user may control the task queue on a remote
computer. The system is flexible and easy to use,
configure, and install. It includes secure data
transfers.

Screen is a full-screen window manager that multiplexes a physical terminal between several processes, typically interactive shells. Each virtual terminal provides the functions of the DEC VT100 terminal and, in addition, several control functions from the ANSI X3.64 (ISO 6429) and ISO 2022 standards (e.g., insert/delete line and support for multiple character sets).

QTermWidget is a Qt4 widget that provides terminal emulation for embedding in other applications. It is based on the KDE4 Konsole code, but was rewritten entirely to depend on Qt only. Python bindings also exist.

The sniffy project can trace/log the data of any
pseudo terminal in the system. Due to the way the
terminal works, such a terminal trace provides
complete information of what happened on the
terminal screen, and sniffy is able to
display/replay this information. It consists of a
kernel module able to connect/hook on the pseudo
terminal, a program to display the contents of any
pseudo terminal on the fly, a daemon process
tracing the pseudo terminal content into the file,
and a replay program to replay any stored pseudo
terminal session.